Okay, first, I don't know what exactly who/what was in the photo that accompanied your e-mail. So I'm unable to comment on that.
Second, from the article:
On many African-American messageboards you'll find people laughing over the familiar name tales, including Ledasha. In those forums, though, the racial and cultural setting isn't just alluded to, it's the whole point -- and the distinctions go far beyond black and white. Names are dissected as "ghetto" or "saditty," likely to get you rejected for a corporate job or likely to get you beaten up in the 'hood. "Ghetto names," including the standard urban legends, are a staple of black dj's and comics, as in this YouTube video. The names are used as explicit, exaggerated symbols of a specific social set, just as a caricatured "valley speak" might be used by whites.
Get it? The article then goes on to discuss this UL's usage on white racist sites.
Now, I don't care whether you got this e-mail from a black person or not; the intent is mockery and those being mocked are the ignorant under-class. Whether or not this class is deserving of mockery is something else altogether. When American whites are sending this UL around, the message is racist. When blacks send out the UL, race is still (as pointed out above) "the whole point".